The life expectancy of the U.S. population in 2015 was 78.8 years, down from 78.9 years in 2014. Life expectancy for males in 2015 was 76.3 years (down from 76.5 years in 2014). Life expectancy for women was 81.2 years (down from 81.3 years in 2014).
The decrease in life expectancy is attributed to increases in deaths from heart disease, chronic lower respiratory diseases, unintentional injuries, stroke, Alzheimer’s disease, diabetes, kidney disease, and suicide. It is the first decrease since 1993, at the height of the U.S. AIDS epidemic.
Center for Disease Control, “Mortality in the United States, 2015”, NCHS Data Brief No. 267, December 2016 Link.